1/*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26/*
27 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 */
30/*
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
33 */
34
35#define DEBUG_SUBSYSTEM S_RPC
36
37#include "../include/obd_support.h"
38#include "../include/obd_class.h"
39#include "../include/lustre_lib.h"
40#include "../include/lustre_ha.h"
41#include "../include/lustre_import.h"
42
43#include "ptlrpc_internal.h"
44
45
46void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc,
47			 int mdidx)
48{
49	CLASSERT(PTLRPC_MAX_BRW_PAGES < LI_POISON);
50
51	LASSERT(mdidx < desc->bd_md_max_brw);
52	LASSERT(desc->bd_iov_count <= PTLRPC_MAX_BRW_PAGES);
53	LASSERT(!(md->options & (LNET_MD_IOVEC | LNET_MD_KIOV |
54				 LNET_MD_PHYS)));
55
56	md->options |= LNET_MD_KIOV;
57	md->length = max(0, desc->bd_iov_count - mdidx * LNET_MAX_IOV);
58	md->length = min_t(unsigned int, LNET_MAX_IOV, md->length);
59	if (desc->bd_enc_iov)
60		md->start = &desc->bd_enc_iov[mdidx * LNET_MAX_IOV];
61	else
62		md->start = &desc->bd_iov[mdidx * LNET_MAX_IOV];
63}
64
65void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, struct page *page,
66			  int pageoffset, int len)
67{
68	lnet_kiov_t *kiov = &desc->bd_iov[desc->bd_iov_count];
69
70	kiov->kiov_page = page;
71	kiov->kiov_offset = pageoffset;
72	kiov->kiov_len = len;
73
74	desc->bd_iov_count++;
75}
76